. 2021 Jan 20;28(20):25748–25757. doi: 10.1007/s11356-021-12484-x

Table 2.

Amount of PCB (μg kg⁻¹) in soil before and after washing by either HA solution or water at liquid:solid ratio of either 10:1 or 1:1

PCB congeners	PCB in original soil	PCB in soil after washing with HA solution		PCB in soil after washing with water
		Ratio 10:1	Ratio 1:1	Ratio 10:1	Ratio 1:1
Tri-CB
28	163 ± 13^a	37 ± 5^b	36 ± 11^b	118 ± 4^c	133 ± 12^c
Tetra-CB
52	142 ± 5^a	32 ± 2^b	35 ± 9^b	83 ± 6^c	100 ± 9^c
77	6 ± 0.1^a	1 ± 0.2^b	2 ± 0.2^c	4 ± 0.1^d	4 ± 0.3^e
81	3 ± 0.1^a	1 ± 0.1^b	1 ± 0.1^b	2 ± 0.1^c	2 ± 0.2^c
Sum	151	34	38	89	106
Penta-CB
95	143 ± 3^a	31 ± 1^b	42 ± 10^b	82 ± 8 ^c	95 ± 9^c
99	88 ± 3^a	18 ± 1^b	26 ± 6^b	52 ± 3^c	62 ± 5^c
101	255 ± 8^a	54 ± 1^b	74 ± 17^b	155 ± 23^c	173 ± 12^c
105	76 ± 5^a	16 ± 1^c	26 ± 8^c	54 ± 8^b	65 ± 11^ab
110	216 ± 6^a	45 ± 2^b	63 ± 15^b	141 ± 18^c	157 ± 20^c
114	4 ± 0.5^a	0^b	1 ± 0.1^b	2 ± 0.3 ^a	3 ± 0.2^a
118	213 ± 9^a	46 ± 1^b	6 ± 17^b	155 ± 8^c	170 ± 9^c
123	11 ± 2^a	3 ± 0.2^b	4 ± 0.8^bc	6 ± 0.5^c	7 ± 0.6^c
Sum	1006	213	242	647	732
Hexa-CB
126	11 ± 0.5^a	2 ± 0.1^b	4 ± 0.6^b	5 ± 0.2^c	6 ± 2^c
138	482 ± 24^a	96 ± 5^b	167 ± 40^c	299 ± 14^d	337 ± 31^d
146	44 ± 1^a	9 ± 0.5^b	15 ± 3^b	27 ± 5^c	31 ± 5^c
149	278 ± 10^a	58 ± 3^b	90 ± 20^c	176 ± 17^d	201 ± 7^d
151	114 ± 3^a	24 ± 1^b	36 ± 8^b	72 ± 6^c	79 ± 11^c
153	443 ± 24^a	91 ± 7^b	143 ± 32^b	286 ± 8^c	313 ± 31.^c
156	35 ± 3^a	7 ± 0.1^b	16 ± 6^bc	22 ± 1^cd	25 ± 7^acd
157	11 ± 0.8^a	2 ± 0.2^b	5 ± 2^bc	7 ± 0.5^cd	8 ± 0.6^cde
167	14 ± 0.4^a	3 ± 0.5^b	5 ± 2^c	9 ± 0.5^d	11 ± 2^d
Sum	1432	292	481	903	1011
Hepta-CB
170	190 ± 9^a	37 ± 4^b	73 ± 17^c	108 ± 4^d	116 ± 18^d
177	80 ± 4^a	16 ± 1^b	29 ± 6^c	49 ± 3^d	55 ± 6^d
180	458 ± 16^a	96 ± 7^b	164 ± 35^c	273 ± 26^d	300 ± 6^d
183	230 ± 8^a	48 ± 4^b	80 ± 17^c	147 ± 11^d	164 ± 12^d
187	59 ± 2^a	13 ± 1^b	21 ± 5^c	35 ± 2^d	42 ± 6^d
189	7 ± 0.6^a	2 ± 0.2^b	3 ± 0.7^c	4 ± 0.4^cd	4 ± 0.3^cd
Sum	1024	212	370	616	681
Deca-CB
209	1569 ± 21^a	530 ± 15^b	515 ± 46^b	989 ± 44^c	1208 ± 25^d
Total	5345	1318	1682	3362	3871

Row values followed by a different letter indicate significantly different values (P < 0.05), as determined by one-way ANOVA followed by the Tukey test